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以120目四川三台膨润土为载体,TiCl4为钛源,通过水解法制备了TiO2/蒙脱石复合材料,样品分别在500℃恒温1h、2h、3h和4h,以及在不同温度(300、500℃和700℃)下煅烧1h。利用X射线衍射(XRD)表征了其结构,紫外可见分光光度法(UV-Vis)表征了其光催化性能。通过光降解甲基橙(MO)得到最佳的煅烧温度和恒温时间,并用光催化效果最好的样品和试剂级TiO2作了比较,最后在理论上阐明了通过TiCl4水解法制备的复合材料的光催化性能不如TiO2的原因是TiO2的颗粒过小。
The TiO 2 / montmorillonite composites were prepared by hydrolyzing TiCl 4 with 120 mesh Bentai Bentonite as carrier and TiCl 4 as the titanium source. The samples were respectively heated at 500 ℃ for 1h, 2h, 3h and 4h and at different temperatures ° C and 700 ° C) for 1 h. Its structure was characterized by X-ray diffraction (XRD) and its photocatalytic activity was characterized by ultraviolet-visible spectrophotometry (UV-Vis). By photocatalytic degradation of methyl orange (MO) to obtain the best calcination temperature and constant temperature time, and with the best photocatalytic activity of the sample and reagent grade TiO2 were compared, and finally in theory elucidated by TiCl4 hydrolysis of the composite material The reason why photocatalytic performance is inferior to TiO2 is that TiO2 particles are too small.